Saudi Arabia’s King Abdullah was released from New York Presbyterian Hospital after successful back surgery, but the oil-rich monarch and his massive entourage — now holed up at the Waldorf — isn’t heading home anytime soon.

That could mean a royal headache for guests at the tony hotel, where seven princes with their own staffs and security teams have reportedly been staying, although it is not known where the king is recuperating.

Over the Thanksgiving holiday their extended stay infuriated some 100 guests when they were told their rooms had been given away, according a report.

A spokesman for Hilton Worldwide, which owns the Waldorf, declined comment.

The 86-year-old king, who was given a clean bill of health Tuesday night, will remain in the city to continue his physical therapy, but it’s unclear how long that will take.